Barrel chamber block



FIG. 1 is an upper, right, front perspective view of the barrel chamber block, showing my new design;

FIG. 2 is an upper, left, front perspective view thereof;

FIG. 3 is an upper, right, rear perspective view thereof;

FIG. 4 is an upper, left, rear perspective view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a front view thereof; and,

FIG. 10 is a rear view thereof.

The broken lines showing portions of the barrel chamber block as well as the broken lines showing environmental structure form no part of the claimed design. 

CLAIM The ornamental design for a barrel chamber block, as shown and described. 